Coffee-urn.



F. L, LANDERGREN.

COFFEE URN.

APPLICATION FILED MAR. 11. 1911v Patented Sept. 3, 191.2.

m. 0 4 Q A M 0 onnrou.

FRANK L. LANDERGREN, OF NEW YORK, N. Y.

curries-URN.

menace.

specification of Letters Patent.

Patented Sept. 3; 1 912;

Application filed March 11, 1911. Serial No. 813,902.

To all whom 1'1? may concern:

Be it known that. I, FRANK L. Limonm harm, a citizen of the United States, re-

siding at New York, in the county ot New York and State of New York, have inveuted certain new and usefui Improvements in Coffee-Urns; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and. use the same.

The present invention relates to an improved compact form of coiiee urn, the construction of which facilitates the removal and the separation of the parts of the percolator and insures keeping the coffee at a maximum temperature by direct contact be tween the hot. water used to make the coflee and the exterior of the coffee tank.

It is one object of my invention to produce a coiiee urn. of the character described con-' sisting of'few parts and capable of being made at a very reasonable cost;

Another object of the invention is to produce a cofi'ee urn of the character descrlbed which shall deliver cofi'ee boiling hot and always free from sediment.

One embodiment of my invention is shown in the accompanying drawings wherein- Fig'ure-I is a side elevatlon of the urn. Fig". 2 is a vertical sectional view of the same and Fig. 3 is a horizontal section of the view taken on the plane 3-3 of Fig. 2.

The main or outer casing or vessel is shown in cylindrical form in the drawings at 10, being provided with a hand hole 11, supply pipes 12 for steam and water, and a glass water gage 13. It is into this vessel 10 that the fresh water is first introduced, whereit is heated either by steam or in any other well known manner. In order to prevent" the development of an excessive steam Jprepsure within the apparatus, I prefer to a-safety valve 1% of any well. known icgpntstruction. The top of the casing 1.0 is

' surmounted by a suitable cover 15.

Within the casing 10 is the coffee tank 16 so located as to becontinually kept'boiling hot by direct contact with the boiling water ,o-nd steam in said casing 10. The tank .16

is preferably circular in cross section and. provided with an annular flange 17 which is'riveted or otherwise suitably secured to the casing 10, so as to serve both to support the tank 16 and to confinethe steam and water within the casing 10.

, The vertical pipe 18, provided with a valve 19 dips under the water in the casing j 10 and-passes up through the flange'17..

Over the top of this pipe'there closely fits the flared end of the delivery pipe 20, leadi 11g into'and rigidly attached to the cover of the percolator. The coupling between the pipes 18 and 20 is such that the pipe 20 may be readily removed merely by lifting ofi' the coverof the percolator. The percolator preferably consists of a vessel 21 having a horizontal annular flange or supporting member--22 and a cover 23, tightly fitting over the upwardly projecting flange 24 of saidvessel 21. I prefer to attach the cover 23 to the percolator 21 by the bayonet slot and pin fastening 25, the pin being outside of vessel 21. Underneath the cover 23 there is fastened a deep distributing tray 26 whose depending portion goes inside of the flange 24 of the vessel 21. The bottom of this tray 27 is made of perforated sheet metal or wire mesh, and is intended to dis tribute andsprinkle the water over the cottee below. This distributing tray is preferably removable from the inside of the cover.

To the bottom of the vessel 21 there is attached, by a bayonet joint 28, a sieve whose bottom is preferably composed of appropriate stretched gauze 29, whereby the grounds of coffee are supported during the operation of the device.

From the cotfee tank 16 there extends a pipe 30' throughlwhich the coffee may be drained through the tap 31. I prefer to so place the pipe 30 that a certain portion of the depth of the codes tank will be below the point of exit through said pipe, and in this way I prevent any sediment from being drawn ofi with the coffee.

Hot.water may be drawn off through the tap 32: The tube 33 is of glass and serves to indicate the level of the coffee within the tank 16.

The pressure of the steam developed in the main vessel 10 forces the water from said vessel up through the pipe 18, when the valve 19 is open, and over by the pipe 20'into the top of the percolator, where it is sprinkled over the ground coffee on top boiling water and stem in the main vessel 10, the coffee will'always hekept boiling hot. It will also be seen-that, on removing the cover 15, the entire percolator, together with the pipe 20, can be lifted right out of the apparatus; after which the cover 23 my be easily removed by turning it slightly so as to liberate the pin fromlthe bayonet slot. In the-seine manner the tray 26 can be;

removed from the covein Thus the cleaning of'thepercoletor, the changing of its parts and the renewaljof the cofiee maylbe aecomplished withthe greatest ease.

Vaiious changes may be made in this device without deperting'from my lnvention andI do not limit myself to the details structed'with air annular flange at the upper.

edge thereofsecnring the same to the was-- aid vessel for delivering. vessel; aitank 16 located wholly within the vessel and spaced, from the. bottom and sides thereof; said tank con- Sci; a vertically disposed pipe 18 rigidly secured to thewall ofthe outer vessel, and passing" through and projecting slightly above the annular flange 17 of the tank; a percolator consisting of a vessel '21 having an annular supporting flan+ge 22 restin upon the annular-fiangel'f o the tank, an having; an upwardly projecting annular flange 24, a removable screen bottom 29 for 35 the percolator, a percolator cover 23 closely and removebly fitted on said upwardly pro jeeting flange 24, a second screen 27 removably mounted on said cover, a, pipe-section 20 secured to said i cover and opening 40 through the l pper portion of'said cover, and, having a flaring lower end'fitti over the projecting end of said vertical pipe 18 and adapted to receive therefrom heated water from said vessel and deliver the seine within said percolator; and a removable cover 15 for said outer vessel, substantially as described.

FRANK, L. LANDERGREN. Witnesses: r M. G. CnAwronn,

H. S. MAcKAYn. 

